Token and username generation for KMS authentication

generate-token.py

import kmsauth

generator = kmsauth.KMSTokenGenerator(
    # KMS key to use for authentication to the lambda
    'alias/awseipext-production-iad',
    # Encryption context to use
    {
        # We're authenticating to this service
        'to':'awseipext-production-iad',
        # It's from this IAM role
        'from':'myrole-production-iad',
        # This token is for a service
        'user_type': 'service',
        # This is an association action
        'action': 'associate',
        'resource': '52.0.0.1',
    },
    # Find the KMS key in this region
    'us-east-1'
)
username = generator.get_username()
token = generator.get_token()